Results 21 to 30 of about 625 (186)

What causes the variations of the peak intensity of CIR accelerated energetic ion fluxes? [PDF]

open access: yesAnnales Geophysicae, 1998
The variation of the peak intensity of energetic ions accelerated at CIR related shocks in the interplanetary medium as observed by instruments on board of ULYSSES during its pass towards the south polar region and from the north polar region back to ...
E. Keppler
doaj   +1 more source

Change of Spectral Properties of Magnetic Field Fluctuations across Different Types of Interplanetary Shocks

open access: yesThe Astrophysical Journal Letters, 2023
The interaction between interplanetary (IP) shocks and the solar wind has been studied in the past for the understanding of energy dissipation mechanisms within collisionless plasmas.
Byeongseon Park   +7 more
doaj   +1 more source

Interplanetary Signatures during the 1972 Early August Solar Storms

open access: yesThe Astrophysical Journal, 2023
In 1972, early August, a series of interplanetary shocks were observed in the heliosphere from 0.8 to 2.2 au. These shocks were attributed to a series of brilliant flares and plasma clouds since at that time coronal mass ejections (CMEs) and their ...
Consuelo Cid   +3 more
doaj   +1 more source

Frequency‐Dependent Responses of Plasmaspheric Hiss to the Impact of an Interplanetary Shock

open access: yesGeophysical Research Letters, 2021
Plasmaspheric hiss waves are essential for the pitch‐angle scattering and precipitation of energetic electrons and interplanetary shocks may affect these waves.
Haobo Fu   +6 more
doaj   +1 more source

The Crucial Role of Perpendicular Diffusion in the Longitude Distribution of >10 MeV Solar Energetic Protons

open access: yesThe Astrophysical Journal, 2023
Gradual solar proton events are thought to consist of solar components originating near the Sun and interplanetary components associated with interplanetary shocks, and the role of interplanetary shocks is considered to be crucial in supplying particles ...
Yang Wang, Gang Qin
doaj   +1 more source

Planar Magnetic Structures Downstream of Coronal Mass Ejection–driven Shocks in the Inner Heliosphere

open access: yesThe Astrophysical Journal, 2023
Planar magnetic structures (PMSs), characterized by interplanetary magnetic field vectors remaining parallel to a specific plane, are commonly observed in the solar wind, especially in the sheath region of interplanetary coronal mass ejections (ICMEs ...
Mengsi Ruan   +9 more
doaj   +1 more source

Reflected ions at interplanetary shocks [PDF]

open access: yesGeophysical Research Letters, 2010
This paper shows that the shock dissipation mechanism changes profoundly from the inner to outer heliosphere and that pickup ions are responsible for shock dissipation beyond 35 AU. We make the first study of reflected ions in ICME sheaths downstream of interplanetary shocks observed by Voyager 2 from 1–80 AU.
openaire   +1 more source

Physical Characteristics of Coronal Region Driving Out the Interplanetary Shock [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2008
Using the solar wind data of 2000 observed by ACE, We classified the interplanetary shock on basis of shock driver. We examined the physical properties of shock drivers such as the ratio of charge states(O7/O6) and thermal index(I_{th}).
Su Yeon Oh, Yu Yi
doaj   +1 more source

Particle Acceleration at Interplanetary Shocks [PDF]

open access: yesAIP Conference Proceedings, 2008
The acceleration of interstellar pick-up ions as well as solar wind species has been observed at a multitude of interplanetary (IP) shocks by different spacecraft. This paper expands upon previous work modeling the phase space distributions of accelerated ions associated with the shock event encountered on day 292 of 1991 by the Ulysses mission at 4.5 ...
Matthew G. Baring   +7 more
openaire   +2 more sources

Acceleration of Suprathermal protons near an Interplanetary Shock

open access: yesAstronomy & Astrophysics, 2023
Context. Interplanetary collisionless shocks are known to be sources of energetic charged particles up to hundreds of MeV. However, the underlying acceleration mechanisms are still under debate.Aims. We determine the properties of suprathermal protons accelerated by the interplanetary shock on 2021 November 3 with the unprecedented ...
Liu Yang   +14 more
openaire   +1 more source

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